Permutation-lock.



G. H. HAMILTON.

l PERMUTATIONLOCK.

APPLIOATION FILED HAY 25, 1909.

Patented Dec. 7,1909;V

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GEORGE H. HAMILTON, F PORTLAND, OREGON.

Specication of Letters Patent.

Patented Dee. 7,

Application led Hayi', 1909. Serial No. 498,232.

To all whom fit may concern:

Be it knownthat LGEORGE HAMILTON, a citizen of the United States, and aresident of Portland', in the county of Multnomah Aand State of Oregon,have invented a nevsT and Improved Permutation-Lock, of which thefollowing is 'a full, clear, and exact de'- scription.

The invention is an improvement in permutation locks such as areprovided in connection with latching spindles of ordinary locks', andihas in vienr aconstruction embodying a latch spindle, the spindle havingi the customary knob and revoluble vindependently of` the latchoperating mechanism, the spindle `being provided .With a push bar'tolock it to said mechanism, and also having a spring 'paivl to lock thepusl1bar in its innermost and retracted positions, controlledE by a.permutation mechanism -mounted on the spindle at the outside of andadjacent to the outer door knob.

i Reference is' to be had to the accompany- 'ing drawings forming a partof this specifi.

cation, in which similar characters' of reference indicate.corresponding parts in all the views. Y

Figure 1 is a central vertical section through a lock embodying myinvention; Fig. 2 isa cross-section of the same on the line 2-2 of Fig.41'; Fig. 3 is an inner tace view of one of the fixed index rings of thepermutation mechanism; Fig. 4 is a similar vieWin section, of one of theoperating rings of the permutation' mechanism; Fig. 5 vis a similar viewofone of the tumbler rings of said mechanism; and Fig. 6 is a similarView of the innermost tumbler ring.-

InV the embodiment of my invention shown, the door or other closure 10is provided With 'a lock 11 of conventional. form, except that it .isprovided With a divided latch spindle comprising an inner section 12 andan outer 4section 13, the sections having the customary door knobs 14and" 15 respectively. The inner end portion of the section 1 2 of thespindle has an expanded head 16 which prevents the withdrawal of thisportion ot' the spindle from the lock, the said head having a socket 16aarranged in alinementwith and adapted to be engaged by a Lush-bar 14'slidable in the spindle sec- 4tion 13.- 'The spindle section 13 has a.nut or other enlargement. 18 secured to its in- V ner end, and islongitudinally slotted to re-I ceive the push-bar 17, as shown in Figs.1

-and 2, the push-bar extending into a coun?! terboredy recess formed inthe knob, where it is provided with a push-button`19 and normally forcedto a retracted positionby a spring 20, the latter being located aboutthe bar within the-recess and bearing o'n the i pushbutton and the innerWall of the knob, ".lhe push-bar is provided with a 4number` of teethl21 on its upper face, the'outer'tooth of which contacts with the innerface of the knob when the push-barns fully re#l tracted.

YVithin the longitudinal slot of the spinlj die section 13, is pivotedat the inner end a pa'wl 22 having teeth 23 opposed to the teeth 21 andadapted to mesh therewith when the vpush-bar is in its retracted andprojected positions. The pawl 22 is normally forced from the push-bar todisengage the teeth, by a spring 24 arranged near' its pivot andybearing on 'the upper face of the ush-bar. The spindle section 13 isjourna ed in a knob-plate 25, which is provided `with' anoutwardly-projecting boss, the same being separated a substantialdistance from a siml-4 lar inwardly-projecting portion on the knob, andin this space, on the spindle section 13, I provide a permutationmechanism for controlling the position of the pawl 22.

The permutation mechanism consists in general of tumbler rings 26 and26, shown in detail in Figs. 5 and 6, respectively, index rings 27,alternating With the tumbler rings, and operating rings 28, as shown indetail' in Figs 2 and i, arranged at the outside' and covering thetumbler rings. Each tumbler ring 26 has an rinner notch 29, into Whichthe' back of the pawl 22 is adapted to pass, and is freely revoluble onthe spindle section 13. The notch 292l in the innermost 'tumbler ring26a is beveled at one side to register with a correspondingly-beveledportion 29b at'the edge .of the paWl 22. The intermediate index ringshave gibs 30 keying them lto the spindle section 13, and notches 31 inregister with the slot of this section of the spindle and designed toreceive the back or outer portion of the paWl 22. The inner projectingportion of the knob llforms one of these rings, which, as also thoseindex rings separate from the spindle, have a num-4 elongated depression33. The 'operating rings 2S are counterbored at opposite sides to titover the index rings 27. The inner or side face ot the counterb'oredportion at. one sideI of the rings is recessed to receive a spring S4,one end of the spring being suitably fixed, and the other end carrying apin 35 which passes through an aperture to the opposite side of the ringand normally projects suiiiciently, as shown in Fig. l, to engage therecesses and 33 of the adjacent index` ring. The recess containing thespring 3.4, is sutiiciently deep to permit of the ,pin moving4 inwardlyout ol engagement with the recesses and 33' when theoperating ring QS isrevolved. The tumbler rings 26 are sufficiently tight in the operating`rings Q8 to move therewith when the rings 28 are revolved, but the rings2S may be turned on the tumbler rings when the latter areheld againstrotation. As the operating rings 28 are revoived, the pins successivelysnap into the recesses of the index and it can be easily detected whenthe pins pass into the elongated slots 33, which are shown to be locatedin radial'alinen'ient With -the notches 31, which, as before stated, arein register with the longitudinal slot of the spindle section 13.A lVhenthe operating rings have been moved to break the combination, thetumbler rings press the pawl 22 inwardly against the tension ot itsspring and engage the teeth of the pawl with the teeth. of the push-bar.The tumbler rings are brought to a position to release the paivl fromthe push-bar by -any one knowing the combination, by first moving theoperating rings until the pins engage the elongated recesses ot thefixed index rings, then counting the number ot recesses 'from this pointas each. operating ring is turned in the proper direction. Theserecesses may be counted by noting the number of' vibrations made by eachpin yin its successive engage ments. Vhen `the last tumbler ring ot thecombination is set, the pawl 2Q moves outwardly, under the iiiiuenee ofthe spring, into the notches otl the tumbler and index `rings, at whichtime the push-button of the4 push-bar may be forced inwardly to engagethe push-bar with the socket ot the spindle section l2, and the knob l5used to operate the latch spindle of the lock. The pawl 22 may be forcedinwardly to lock the push-bar iii either its projected or retractedpositions by giving the operating ring 28, carrying the tumbler ring26a, a partial turn, the inclined edge of the notch 29a and the beveledportion ot the tumbler ring and pawl respectively, adi'iiitting of thisoperation.

To change the combination, the combina.- tion is set to perinit'ot thedisei'igageiiient ot thefpawl and the puslid'iar, asshowii in Fig.

1jivhereupon the operating rings areforced around on "the tumbler ringsas inany notches or recesses as desired, the operator noting the changemade for each 'operating thinible or sleeve ot' the lock havingthe isocket remaining, or the said sleeve made ol' a size to directly receivethe puslrbar, in which case the sleeve would constitute the innersection of the spindle.

HavingA thus described my invention, I claim as new and desire to secureby Letters Patent:

l. .ln a lock, a latch spindle transversely divided into two separa-tesect-ions, each secV tion independently revoluble, with one of thesections having a push-bar to lock the tivo sections ot' the spindletogether, slidable therein, a spring-pressed pawl to lock the push-barin its'retracted and projected positions, 'and aperinutation mechanismto control the pa'wl, carried onthat section ot the spindle having thepush-bar.

2. In a lock, a latch spindle transversely divided into two separatesections, a pushbar to lockthe two sections otl the spindle together,slidable in one of said sections, and means to lock the push-bar in itsprojected and retracted positions, including a permutation niechaiiismhaving index rings and operatii'ig rings, the said index rings vandoperating rings alternating with each other, r.with the index rings ixedto the spindle section having lthe push-bar and each provided with anumber of recesses on its inner face, one ot' which is elongated, andthe operating rings revoluble on the spindle and each having aspring-pressed pin adapted to successively engage the recesses of theadjal cent index ring.

3. In a lock, a latch spindle having separate sections, one of saidsections longitudinally slotted and provided with a knob having a.counterbored recess, a push-'bar' to lock the 'tivo sectionsof thespindle to! gether, slidable in said slot and extended into thecounterbored portion of the knob, a push-button in said counterboredportion of the knob and attached to the push-bar, a spring bearing onthe push-button and knob, forcing vthe. push-bar outwardly, and means tolock the push-bar against inward movement, including a permutationmechanism revoluble on the slotted section of the V tions and having apush-button arranged in" -said necess, and means vtolock the push-barin-ltsiretracted position, including a permutation mechamsnr carriedonthe spindle at [theoutsideo fvnndadjaeent tothe'knob, f f5. In a'locl,'ja Ilatch'spi'ndle constructed of,

- an `innenantil outer. section, .the outer section 1tfa'vingail'ongitndinalfslot, a pushbar to lock-the two sectionsof the spindletogether,

slidablyv monnted -insaidslot, means .nor-

malljyforcing the push-bar ina direction to' disengage from thelopposite spindle, a 'papel-'to lock the push-barvinl its retractedposition',- pivotallyy supported in said slot,

and a permutation' mechanism to control the 'pawh carried, on theslotted spindle section and 'having index and operating ringsalternating with each other, Withthe index rings secured to the spindle.

56.- In n lock, a latch spindle in separa-te sections, one of thesections having a longitudinalslot, a push-bar' to lock thevtwo sectionsof the spindle together, slidable -in the saidslot, apavvl to vlock-'thevpush-bar in .a retracted position, pivotally supported With-- in theslot, and permutation mechanism to control the pawl, carried on theslotted spin? dle sect-ion. A

7. In a lock', a latch spindle-transversely ldivided into an innernndouter section, 'the outer section having a. longitudinal slot andprovided with a recessed knob, a push-bar tolckthe tivo'sections of thespindle to- -get'henfslidable in snidsl-otandjhaving a `4push-buttonlocated in'the' recessfo' theA l-niob, a spring `arranged i-n- 4therecess of the Iknob and bez \'r 1n'g on the button, normally forcingthe.push'bar to its 'outermost `posi.

Y ition, a springtpaivl to* look the push-bar in retracted and projectedpositions, 'pivoted in saifdis'lonn series of. index rings fxedto theslotted spindlefsection-andhaving internal notches registering with thesaid slot, adapt! Y '.,eelgltoreccive' the outer portion'otl the pand, p

' "a'serii of revoluble tumbler rings alternat' .l5fV

ing fwit-h'fthe index rings and having'- .cor-

-reoondng'internal notches, operating rings s u 1r unding the-tnmblerrlngs and friction'i,

i'nding .thereon-fand spring-'pressed yadopted to successively engagewith a number of recesses formed in the inner ace of .the-ad3acent`1ndex ruig.

to control the operation ot' the spindle, having a series of operatingrings and index rings, the said rings alternating with each other, withYthe index rings fixed to the spindleand having a number of 'recesses onone face, one of whichis elongatechand the operating rings each providedwith a springpressed pin adapted to successively engage in the lsaidrecesses.

9. In a lock., a latch spindle of separate sections, a push-bar tosecure the two sections of the spindle together, slidable in onesect-ion'of the spindle, a'pawl to lock the pusl'i-bar in its retractedvposit-ion, having a beveled shoulder, aseries of index rings fixed tothe spindle section about the pnwl, havingnotc'hes in which the outerportion of the pawl -is adapted to iass, tumbler rings revoluble on thespindle and alternat- 'ing with the index rings, having correspondingnotches,f\vith' the notch in one of the tumbler rings having a bevelededge 'to conform with the beveled shoulder of the panfl, and operatingrings 'carried on and engaged withv the tumbler rings.

l0. Ina. lock, a latch spindle divided int-o an inner and outer section,av 'knob plate in which the outer section of the hitch spindle ismounted, a knob in vconnection :with the 'GEORGE H. HAMILTON. iWitnesses:

L QI. 'Fixif DoUuLA'ss,

ipje'd-f byvv 'the operating rings, each-l outer spindle section,spaced'from the knob y S.' The combination vof n lock haring. nlatchspindle and a' permutation mechanism

